Emergency lighting requirements and related building codes are vital in public transportation structures to facilitate occupant egress during a building fire or other emergency situation. The emergency lighting UPS from ABB is designed in compliance with standard EN 50171 and is therefore the ideal solution for installation in buildings subject to fire safety regulations and in particular for the power supply of emergency lighting systems. This is not all however, the emergency lighting UPS is also suitable for supplying power to other emergency systems such as automatic fire extinguishing systems, alarm systems and emergency detection systems, smoke extraction equipment and carbon monoxide detection devices as well as dedicated security systems in sensitive areas.